The IBM GSKit component used in Rational RequisitePro is susceptible to a Transport Layer Security protocol vulnerability known as "Lucky Thirteen." The vulnerability might allow remote attackers to conduct distinguishing and plain-text recovery attacks by statistically analyzing timing data for crafted packets.
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Description: The IBM GSKit component used in Rational RequisitePro is susceptible to a Transport Layer Security protocol (used in HTTPS) vulnerability known as "Lucky Thirteen." The vulnerability might allow remote attackers to conduct distinguishing and plain-text recovery attacks by statistically analyzing timing data for crafted packets.
The IBM GSKit is used if RequisitePro is configured to use LDAP authentication using SSL. If your RequisitePro deployment is not using LDAP configured with SSL, then your deployment is not sensitive to this attack when authenticating to the LDAP server.
CVSS Base Score: 4.3
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/81902 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)
Affected Products and Versions
Rational RequisitePro 7.1.1.x
Rational RequisitePro 7.1.2.x
Rational RequisitePro 22.214.171.124 and previous versions
Rational RequisitePro 126.96.36.199
Upgrade to one of the below versions of IBM Rational RequisitePro
- 7.1.4.x: Rational RequisitePro Fix Pack 1 (188.8.131.52) for 7.1.4
- 7.1.3.x: Rational RequisitePro Fix Pack 8 (184.108.40.206) for 7.1.3
- 7.1.2.x: Upgrade to 220.127.116.11 or 18.104.22.168
- 7.1.1.x: Upgrade to 22.214.171.124 or 126.96.36.199
Workarounds and Mitigations
* 17 September 2013: Original copy published
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.